---
title: Preview API
status: current
phase: 3
order: 3
---

# Preview API

It's the [Delivery API](delivery.md), with a `preview` key. Same routes, same parameters, same response shape. The difference:

| | `delivery` key | `preview` key |
| --- | --- | --- |
| Draft entries | Not shown | Shown |
| Entries with unpublished changes | The published version | The latest version |
| Archived entries | Not shown | Not shown |
| Files | Only those used by something published | All |
| Cache | `public`, 5 minutes on the CDN | `private, no-store` |

Each entry tells you what you're seeing in `sys`: `version` is the one you got, `published_version` the published one (or `null` if it was never published), and `status` is `draft`, `published` or `changed`.

Use it for your site's preview. **Don't use it in the production build:** you'd show drafts.